Protective device for the coin admission of coin-freed machines



July 1, 1930.- w. G. COLEMAN 1,769,501

PROTECTIVE DEVICE FOR THE COIN ADMISSION OF COIN FREED MACHINES Filed DEC. 14, 1929 HEM WILLIAM GEORGE COLEMAN ATTOR N EYS Patented July 1 1930 UNI-TE. e s" a WILLIAM GEORGE GOLEMALT, or rename, new ZEALAND- PROTECTIVE DEVICE roe THE. corn AnM'Issron or' oloIN-rnnnn MACHINES Application filed December 14, 1929, Serial 'No. 414,055, and in New zealand April 18,1929.

This invention relates to coin-freed Ina-- chines. Hitherto owners of such machines have been subjected to considerable trouble and 5 annoyance as the result of people mischievously inserting in the coin slots articles such as pieces of broken glass, wire, or other things which amb or injure the mechanism and thus render the machines inoperative.

It is the object of the present invention to provide a protective device of novel and spe cial construction for mounting over the coin entrance of such machines, the said device being such that it will be incapable, or practically incapable of admitting anything but the required coin or a disc closely approximating to the same in diameter and thickness.

In order that the nature of the invention and its construction may be clearly understood, it will now be fully described and explained with reference to the accompanying drawings, in which Fig.1 is a front view of the device,

Fig. 2 is a rear view of the same showing the parts in their normal positions,

Fig. 3 is a similar view to that of Fig. 2 but showing the partsin the positions which they assume when a coin is in process of insertion, and,

Fig. t is a longitudinal section through the device along the line IVIV, Fig. 1, the parts being here shown in full lines in their normal positions while the corresponding posit-ions which such parts assume when a coin is being inserted is indicated in dotted lines.

The construction includes a casing comprising a base-plate 1 having a coin-slot 2 enclosed by a forwardly protruding formation 3 containing a flanged entrance 4 or the ,correct shape and dimensions to closely admit the required coin as 5 to the said slot 2, the construction thus far described being generally similar to that of certain coin entrances at present in use.

According to the present invention however there is associated with the slot 2 a plate 6 slidable transversely thereacross and adapted in one position as here shown in Figs. 1, 2, and in full lines, Fig. 4:, to cover the slot 2 and in another position to uncover such slot as by presentingin registerltherewith a slot 7-1011116C1111l the plate 6, as clearly shown -in Fig.3, the said slidable mounting of the plate6 being conveniently achieved as by the provision of guides 8 upon the rear side of the-plate 1 and between which guides the said plate 6.is received. 7

I The said sliding movements of the plate 6 are ;attained 'bythe provision of a pair of levers 9 and 10 each having one end fulcrumed' asxatpoints 11 and 12 respectively within theprotruding formation 3and from whence such levers extend rearwardly through slotted openings 13 and 14 through the base 1, one to either endof the slot 2.

-The rear ends of the levers 9 and 10 extend respectively through oppositely arranged oblique slots 15 and 16 in the sliding plate 6 and beyondwhich the extremities of such levers are provided with inwardly returned formations 18 and 19 extending" in alignment with the slot 2 and adapted to-bear against the rear face of the plate v6, therebykeepingthe latter in contact with the base 1.

The said levers 9 and 10 are spring-com v trolled to cause their free or rear ends to'move mutually inward and thus assume positions at those ends of the obliqueslots 15 and 16 which are closest together, thereby sliding the plate 6 into the position'in which it covers the slot 2, as shown in Figs. 1 and 2 and in full lines Fig. 3,2such control being conveniently accomplished, as here shown by the provision of a tension-spring 20, Figs. 2 and 3, interconnecting the said levers at or near theirrear ends. I i The said levers 9 and 10 are provided also with lugs or formations 21 and 22 respectively which-when the parts occupy their normal positions, as above explained, pro trude slightly within the coin-entrance 4,'the arrangement being such that when a coin is inserted. in such entrance the edges of such coin will come in-contact with the said lugs thereby forcingthelevers 9 and 10apart against the tendencyof the spring 20.

' When so forced apart-the levers will move towards the other ends of the'oblique slots 15 and 16, thereby sliding the plate 6 into the position inwhich it uncoversthe slot 2 i thus permitting the -coin topass theres I when the points offbearing of suchlreturned formations upon theedgesofthe'coin'passes,

through as shown inFigL 3 and in dotted lines Fig.4.

After passing through the: slot 2-the edges of'the coin will engage between'theretu-rned' formations 181 and 19, which, on account of a the tendencyLofthB spring 20 upon 1311811? respective-lcorresponding V levers, -;will sheaf; 1

j firmly upon the edges of such coin and so; 10

serve to propel" the latter iinto the-machine sions of'coin-freed machines; as defined in claim 1, characterized in that the rear ends of said levers are provided With inwardly turned formations disposed in alignment With'said coin-slot to keep said sliding plate a in contact With the base and to engage a coin inserted as aforesaid through said coin slotand prope'lgsuch coin into-the machine.

jlniwit'ness whereof, I have'hereunto set I my hand.

v J WILLIAM-GEORGE COLEMAN.

beyondithedi'ametrieal linejofthe; latter.

{mama slotbeinggnorrnally closed by the:

'plate'G, it" will 'begim'possible toinsert anythingtherethrough'into the machine without 7 7 simultaneously forcing apart theIleversQand r 10 *an' operation that; cannot'conveniently be achieved except by the insertion Within the V coin-entranceof the required coin ora'dis cx V closelyapproximatingtheretoi. 1 I s r .When thelcorrectcoin'is inserted however occupy the hole-of; theinterior thereof and finthesaid coin entranceit willpractically.

mediately return to their. normal positions under action of theasprin gythereby causing i pl 6 to again close the slot. s5, v,

.I claim: 7 1. A protective device a for a the" coin entrances: of coin-freed machines comprising 9 the a combination with; a base-plate adapted for mounting royerisaid entrance, a coin-slot inisaid basesplateand a forwardly protrud ing formation providing a coin 'tentrance en closing saidslot; of; a plate slidable transversely across said slot, tooccupy one posi tioniin which it: covers a and another position vers v each lfulcrnmediwithin said protrud ing formation and extending rearwardly through slotted openings in said base-plate one'to either endiof: said coin-slot, a pair' of of sai df levers extend spring controlling meanstendingrto movethe rear ends of saidj levers mutually-1inwardi' otherehy to cause r r in which-they place said sliding plates in the them to occupy positions insaid oblique slots coin-slot-closing position, and formations upon said levers protruding within said coin entrance to be engaged hy theedges of a coin inserted therein thereby tocause said levers inwhich itunco vers said'slot, a pairof le- 7 i oppositelyjarranged oblique slotsin said sliding plate andthrough which the rear ends to be forced apart and; assume positions in said' ob1ique1slots in which they place said sliding "plate in its" coin-slot-opening posi- 2. A protective deyice :1 for the coin admis-' 

